Hi there.
A patch by Iulian Marinescu was posted on Bugzilla a few days ago to optimize client-side DIB copy operations. I tested it, and it definitely improves the performance of a few applications quite a bit (Propellerhead Reason for example). Even though I can't comment on the quality of the patch, it seems to work as advertised, and I didn't notice any regressions. Would be nice to see it in Wine, so I hope someone more competent could look into the patch and see if it's OK. It's available at: http://bugs.winehq.org/show_bug.cgi?id=3902
Since the patch wasn't posted on wine-patches AFAIK, I thought I should mention it here so it doesn't get overlooked.
Ciao, Willie